MAPEBAND TPE

TPE tape for exible sealing and waterproong expansion joints and over cracks subject to movement

WHERE TO USE

Waterproong expansion joints in road-works, tunnels, hydraulic works and covering areas subject to movement up to 5 or 10 mm, using Mapeband TPE 170 or Mapeband TPE 325 respectively

Some typical application examples

· Flexible waterproong seal of expansion joints subject to large amounts of movement in service

Flexible waterproong seals in tunnels, road-works, etc

Sealing expansion joints in prefabricated panels.

· Sealing structural joints in façades

Sealing joints in hydraulic works, such as channels, basins, drains, pipe-work, etc

Waterproong joints in road-works

· Waterproong expansion joints in at covering layers (under tiles or using suitable protection such as a metallic prole)

TECHNICAL CHARACTERISTICS

Mapeband TPE consists of either 17 cm or 32 5 cm wide tape, called respectively Mapeband TPE 170 and Mapeband TPE 325, 1 2 mm thick, sidelong reinforced with polyester non-woven fabric

Mapeband TPE must be applied by bonding with Adesilex PG4 two-component, low viscosity, thixotropic epoxy adhesive

TPE, short for “Elastomeric Thermoplastic Polyolene”, is the name given to a special group of polyolenes which combine the best properties of thermoplastic polymers and synthetic elastomer technology

Mapeband TPE may be hot-welded with a Leister electronic hot air blower

Mapeband TPE may be also joined by using the “cold-weld” technique by applying a contact adhesive, such as Adesilex LP solvented, poly-chloroprene adhesive, to both surfaces This technique makes it easy to form linear joints or to create special pieces with the tape, to guarantee the waterproof integrity of the entire system

The tape remains permanently exible and deformable even at low temperatures and, furthermore, it is resistant to ageing even if exposed to atmospheric agents

The composition of Mapeband TPE gives it excellent resistance to alkalis, bitumen, diluted lye, slightly acidic solutions and salt solutions

RECOMMENDATIONS

Do not use Mapeband TPE if it will come into contact with mineral oil, petrol or strong solvents (ketones, esters and hydrocarbons).

Do not lay Mapeband TPE on surfaces which are not perfectly clean, dry or which are irregular

Protect Mapeband TPE against perforation

In case of permanent contact with liquids at high temperature it is advisable to previously evaluate the application of the product and consult MAPEI Tehcnical Service Department

APPLICATION PROCEDURE

Preparation of the substrate

Surfaces on which Mapeband TPE is to be applied must be free from oil, grease and paint and must be free from dust and areas which are either uneven or loose

Paintwork or coatings must be removed by sandblasting or with a sanding disc This operation is essential if the surfaces have been treated with polyester, epoxy or polyurethane resin or if it is made from glassy material

If Mapeband TPE is to be applied on metallic surfaces, remove all traces of rust, paint, grease, etc by sandblasting down to bare metal

When Mapeband TPE is applied, the surface must be perfectly dry

To obtain a joint with a clean, well-dened prole, apply masking tape around the outside surface of the joint, in order to obtain an area which is 1 cm wider than the width of the TPE tape to be spread with adhesive (g 1) After laying, bonding and nishing off with a trowel, remove the masking tape

Products to use for bonding

Adesilex PG4, two component, low viscosity, thixotropic epoxy adhesive

Preparation of Adesilex PG4 adhesive

The two components which make up Adesilex PG4 must be mixed together

Pour component B (white-coloured catalyst) into component A (grey) and mix together with a low-speed drill tted with a mixing attachment until a homogenous mix is obtained (uniform grey colour)

The packages are pre-dosed Therefore, do not use only partial quantities of the two components in order to avoid errors when calculating the mixing ratio; this could lead to poor or incomplete hardening of the product If only partial quantities of the components are used, use high-precision electronic scales

Bonding the product

Firstly apply a 1-2 mm-thick uniform layer of Adesilex PG4 onto the clean, dry substrate with a smooth spatula; avoid applying the adhesive inside the joint (g 2)

Lay Mapeband TPE by pressing lightly along the non-woven sides of the tape Make sure that all wrinkles and creases are eliminated and that air bubbles are not formed (g 3)

Apply a second layer of Adesilex PG4 while the rst one is still fresh, completely covering the fabric strip with the new layer of adhesive (g 4) Smooth off the product with a at trowel

Once the second layer of Adesilex PG4 has been applied, sprinkle on a layer of 0.5 Quartz to create a rough surface and slowly remove the masking tape (g 5)

Mapeband TPE must be protected against damage (e g perforation) during the application process If high levels of movement are foreseen, Mapeband TPE must be laid by forming an upside-down “W” (omega) shape on the inside of the joint (g 6)

Butt joints between two strips of Mapeband TPE must be carried out by overlapping and bonding at least 5 cm of the central part in TPE by either hot-welding or cold-welding, as illustrated previously To make the welding of the parts in TPE easier and rmer, press lightly with a at carpeting roller (g 9)

PACKAGING

Mapeband TPE is supplied in boxes and is available in two sizes:

Mapeband TPE 170 (width 17 cm): 30 m x 17 cm rolls;

· Mapeband TPE 325 (width 32 5 cm): 30 m x 32 5 cm rolls

SAFETY INSTRUCTIONS FOR PREPARATION AND APPLICATION

Mapeband TPE is an article and referring to the current European regulations (Reg 1906/2007/CE - REACH) does not require the preparation of the material Safety Data Sheet During use it is recommended to wear protective gloves and goggles and follow the safety requirements of the workplace

PRODUCT FOR PROFESSIONAL USE

TECHNICAL DATA (typical values)

PRODUCT IDENTITY

Colour: grey

Sizes available:

cm (Mapeband TPE 170) 32 5 cm (Mapeband TPE 325)

FINAL PERFORMANCES

Elongation at break (EN 12311-2) (%):

Low-temperature bending (EN 495-5) (°C): < -30

Resistance to atmospheric agents and ultraviolet rays (EN 1297): pass (> 5000 h / degree 0)

Resistance to roots (SIA V280/11):

no root penetration

Reaction to re (EN 13501-1) (Euroclass): E

Waterproong level (EN 1928-B) (bar): 6

Permeability to water vapour (EN 1931): µ = approx. 30000

Perforation resistance (SIA C280/15) (500 g from dropped height) (mm): > 500

Resistance to temperature: from -20°C to +50°C Maximum

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WARNING

Although the technical details and recommendations contained in this product data sheet correspond to the best of our knowledge and experience, all the above information must, in every case, be taken as merely indicative and subject to conrmation after long-term practical application; for this reason, anyone who intends to use the product must ensure beforehand that it is suitable for the envisaged application In every case, the user alone is fully responsible for any consequences deriving from the use of the product

Please refer to the current version of the Technical Data Sheet, available from our website www.mapei.com

LEGAL NOTICE

The contents of this Technical Data Sheet (“TDS”) may be copied into another project-related document, but the resulting document shall not supplement or replace requirements per the TDS in force at the time of the MAPEI product installation.

The most up-to-date TDS can be downloaded from our website www.mapei.com.

ANY ALTERATION TO THE WORDING OR REQUIREMENTS CONTAINED OR DERIVED FROM THIS TDS EXCLUDES THE RESPONSIBILITY OF MAPEI.